Performance Evaluation of Water Delivery System for Command Area of Branch Canal 70 of Jayakwadi Irrigation Project

In this study, distributary wise water delivery system performance of Branch 70 of Jayakwadi Irrigation Project was analyzed using different performance indicators. Crop water requirements of different crop were determined using CROPWAT software. In each irrigation year the adequacy was below 0.80 which indicates their poor performance. Average adequacy value of all irrigation years was 0.5 showed poor performances. For 2010–11 and 2014–15, efficiency were below 0.70 showed poor performances while for 2006–07 and 2009–10, the efficiency were above 0.70 showed good performances not because of efficient water use but because of less water use. The average efficiency value of all irrigation years showed fair performance. The equity ranges from 0 to 0.1 which reflects there good performance during different irrigation years. The average equity value of all irrigation years showed good performance. In case of dependability, for all irrigation years it was above 0.20, the average values of dependability of all irrigation years indicated poor performance. After considering the irrigation season and the whole system, the calculated indicator average values were good for equity, poor for adequacy and dependability, and fair for efficiency. The canal delivery system could not provide dependable water supply at right time and at right place with the requirement of crops. These results show that there is a systemic water delivery problem in the system. The analysis results of the spatial and temporal dimensions of these indicators show that factors causing this problem derive from system management. Hence, there is need to improve the performance with some modifications in the operation and management of canal delivery system.